At first, H309L welding wire was welded on the groove of 13MnNiMoNbR steel plate by overlaying, then 13MnNiMoNbR and 00Cr19Ni10 steel plates were connected with H308L filler wire. Microstructure and 糖心产精国品免费入口*完整版 of the dissimilar steel welded joint were analyzed. The results show that coarse ferrite grain appeared nearby fusion line of 13MnNiMoNbR steel plate, namely 糖心产精国品免费入口*完整版. However, the black and fine carbides precipitated in fusion line of austenite surfacing layer of H309L weld beam. The micro糖心产精国品免费入口*完整版 obviously increased because of carbide precipitation or solution carbon in 糖心产精国品免费入口*完整版of H309L weld beam.